CalendarUtil.java
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package com.hotent.Calendar.util;
import java.time.LocalDateTime;
import java.util.Calendar;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.SortedMap;
import java.util.TreeMap;
import com.hotent.Calendar.model.TimePeroid;
import com.hotent.base.util.time.TimeUtil;
/**
* 日历工具类
* @author hjx
*
*/
public class CalendarUtil {
/**
* 默认结束时间向后推30天
* @author hjx
* @version 创建时间：2014-2-24 下午2:44:42
* @param startTime
* @return
*/
public static LocalDateTime getDefaultEndDate(LocalDateTime startTime){
return TimeUtil.getNextDays(startTime,30);
}
/**
* list转SortedMap
* SortedMap保证 key不重复
* SortedMap保证了时间段的顺序
* @author hjx
* @version 创建时间：2014-2-24 上午11:54:14
* @param list
* @return
*/
public static SortedMap<LocalDateTime, TimePeroid> getTimePeroidMap(List<TimePeroid> list) {
if(list==null||list.size()<=0)return null;
SortedMap<LocalDateTime, TimePeroid> timePeroidMap=new TreeMap<LocalDateTime, TimePeroid>();
for(TimePeroid timePeroid :list){
if(timePeroid!=null)
timePeroidMap.put(timePeroid.getStartDate(), timePeroid);
}
return timePeroidMap;
}
/**
* 根据sortedMap 合计所有时间段的时间总和
* @author hjx
* @version 创建时间：2014-2-24 下午2:22:51
* @param sortedMap
* @return
*/
public static long getCountTimePeroid(SortedMap<LocalDateTime, TimePeroid> sortedMap) {
if(sortedMap==null|| sortedMap.size()==0)return 0;
long countTime = 0;
// map遍历
Iterator<Entry<LocalDateTime, TimePeroid>> iter = sortedMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<LocalDateTime, TimePeroid> entry = (Map.Entry<LocalDateTime, TimePeroid>) iter.next();
Object val = entry.getValue();
long tmpTime = ((TimePeroid) val).getTime();
countTime += tmpTime;
}
return countTime;
}
/**
* 根据时长 和上班时段列表sortedMap，计算任务完成时间
* @author hjx
* @version 创建时间：2014-2-24 下午2:22:51
* @param sortedMap
* @return
* @throws Exception
*/
public static LocalDateTime getEndTime(SortedMap<LocalDateTime, TimePeroid> sortedMap,long time) throws Exception {
long millisecond=time*60*1000;
long countTime = 0;
TimePeroid timePeroid=new TimePeroid();
// map遍历
Iterator<Entry<LocalDateTime, TimePeroid>> iter = sortedMap.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry<LocalDateTime, TimePeroid> entry = (Map.Entry<LocalDateTime, TimePeroid>) iter.next();
Object val = entry.getValue();
timePeroid=(TimePeroid) val;
long tmpTime = timePeroid.getTime();
countTime += tmpTime;
if(countTime>=millisecond)
break;
}
//所有的时间段都加完了仍不够，则返回null，系统要重新计算endtime，再后推一个月
if(countTime<millisecond)return null;
//需要倒推的时间
long moreTime= countTime-millisecond;
//当前时间段倒推
long millisecond2= TimeUtil.getTimeMillis(timePeroid.getEndDate())-moreTime;
//转化成日期
return TimeUtil.getLocalDateTimeByMills(millisecond2);
}
/**
* 获取指定年月的天数
* @param year 指定年
* @param month 指定月
* @return
*/
public static Integer getDaysOfMonth(Integer year, Integer month){
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, year);
cal.set(Calendar.MONTH, month);
cal.set(Calendar.DAY_OF_MONTH, 1);
cal.add(Calendar.DAY_OF_MONTH, -1);
return cal.get(Calendar.DAY_OF_MONTH);
}
}